某军校男性学员爱荷华赌博任务的神经活动过程:一项ERP研究  

Neural activity processes in Iowa gambling task among male cadets from a military university——an event-related potential study

作　　者：朱妍 吴迪 孙科伟 陈祥龙 王祎凡 肖玮 ZHU Yan;WU Di;SUN Kewei;CHEN Xianglong;WANG Yifan;XIAO Wei(Department of Military Medical Psychology,Military Medical Psychology School,Air Force Medical University,Xi'an,Shanxi Province,710032,China)

机构地区：[1]空军军医大学军事医学心理学系航空航天心理学教研室,西安710032

出　　处：《陆军军医大学学报》2023年第23期2434-2440,共7页Journal of Army Medical University

摘　　要：目的探索不同风险决策能力个体的任务态脑电特征,了解风险决策的神经活动过程,并为决策能力训练的指导提供神经生理学的评估指标。方法招募某军校男性学员20名,采用爱荷华赌博任务(Iowa gambling task,IGT)对其风险决策能力进行评估并测量其事件相关电位(event-related potential,ERP)作为神经生理学指标。以行为学指标(净分数)将被试分为高决策能力组和低决策能力组,并分析两组被试在ERP成分上的不同。结果随着选择次数的增加,IGT任务行为学绩效不断提升;Oz通道上,高决策能力组的被试在“输”“赢”两种情况下产生的ENW、P200和FRN振幅均高于低决策能力组(P<0.05)。结论大脑对于结果反馈的早期处理是区分高、低决策能力的重要因素,可以用于评估决策能力训练的有效性。Objective To explore the characteristics of task-state electroencephalogram(EEG)in individuals with different risky decision-making abilities in order to better understand the neural activity process and provide neurophysiological assessment metrics for the guidance of ability training.Methods Twenty male cadets from a military university were recruited to assess their risky decision-making ability and measure their event-related potential(ERP)as a neurophysiological indicator using the Iowa gambling task(IGT)with a 32-channel EEG system.The subjects were divided into high-and low-decision-making ability groups by behavioral indicators(net scores),and then their differences in ERP components were analyzed between the 2 groups.Results The behavioral performance of the IGT was increased as the number of choices increased.On the Oz channel,the participants in the high-decision-ability group produced higher amplitudes of early negative wave(ENW),P200,and feedback related negativity(FRN)in both“lose”and“win”situations than those in the low-decision-ability group(P<0.05).Conclusion The brain’s early processing of feedback on outcomes is an important factor in distinguishing high and low decision-making abilities,and can be used to assess the effectiveness of decision-making ability training.

关 键 词：风险决策 事件相关电位 爱荷华赌博任务 

分 类 号：B441.1[哲学宗教—外国哲学] B845.1[医药卫生—临床医学] R821.22